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Description
The flame detector comprises the following main components:
1
Mounting bracket
2
Rear enclosure cover
3
Enclosure body
4
Front enclosure cover (including the window)
5
Terminal connections
The flame detector is supplied preassembled and includes the mounting
bracket. However, it is not supplied with a mounting support and fixings, cabling,
or glands.
6
2.2
Feature description
2.2.1
Sensitivity
The sensitivity of the flame detector to a fire is a function of: the fuel source and
how it is released; the fire size and distance; the orientation to the flame
detector; and local ambient conditions. The typical figures are based on in-
house tests except where marked with the Factory Mutual (FM) logo, where the
tests were conducted and certified by FM. As with all tests, the results must be
interpreted according to the individual application considering all possible
variables.The sensitivity of the flame detector to different fuel sources is
dependent on the radiant heat output of the fire. Typical flame detector
response characteristics at high sensitivity (40 meters) are shown in the
following table:
Fuel
Fire size
Hydrogen Fire
0.9 m (36 in.)
plume
Methylated Spirits Fire
0.09 m
Methanol Fire
0.09 m
n-Heptane pan fire
0.09 m
Methane fire
0.9 m (36 in.)
plume
The flame detector has two sensitivity settings to deliver flexibility in a multitude
of applications and to ensure detectors do not cross-vote.
The flame detector has, according to standard FM 3260, a high insensitivity to
frequent false alarms such as hot objects and hot work.
Distance
FM
certi-
fied
40 m (131 ft)
Yes
) pan 20 m (65 ft)
Yes
2
2
(1 ft
) pan 20 m (65 ft)
Yes
2
2
(1 ft
2
2
) pan 12 m (40 ft)
Yes
(1 ft
30 m (100 ft)
Instructions for use
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